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nika2105 [10]
3 years ago
12

Solve this quadratic equation using the quadratic formula. (3 - y)(y + 4) = 3y - 5

Mathematics
1 answer:
Alchen [17]3 years ago
7 0
Y= -2 - (the square root of) 21 and Y= -2+ (the square root of) 21
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Paaaa hellllpppp po with solution po sana​
ira [324]
<h2>Solving Equations</h2>

To solve linear equations, we must perform inverse operations on both sides of the equal sign to <em>cancel values out</em>.

  • If something is being added to x, subtract it from both sides.
  • If something is being subtracted from x, add it on both sides.
  • Same with multiplication and division. If x is being divided, multiply. If x is being multiplied, divide.

We perform inverse operations to<em> combine like terms</em>. This means to get x to one side and everything else on the other.

<h2>Solving the Questions</h2><h3>Question 1</h3>

5x+7=15

Because 7 is being added to x, subtract it from both sides:

5x+7-7=15-7\\5x=8

Because x is being multiplied by 5, divide both sides by 5:

\dfrac{5x}{5}=\dfrac{8}{5}\\\\x=\dfrac{8}{5}

Therefore. x=\dfrac{8}{5}.

<h3>Question 2</h3>

7x+4=5x-18

Here, we can group all the x values on the left side of the equation. Subtract 5x from both sides:

7x+4-5x=5x-18-5x\\2x+4=-18

To isolate x, subtract 4 from both sides:

2x+4-4=-18-4\\2x=-22

Divide both sides by 2:

\dfrac{2x}{2}=\dfrac{-22}{2}\\\\x=-11

Therefore, x=-11.

6 0
2 years ago
Plz help ASAP
DENIUS [597]
A+c = 150
10.25a+7.75c = 1470
4 0
3 years ago
25 POINTS!! HELP ASAP PLEASE!!!
gladu [14]

Answer:

b.

Step-by-step explanation:

Stem is the first digit and the leaf is the last digit.

Below the table is explained that 1 l 7 is 1.7 because it also could mean 17. So with that clear the terms from the Stem l Leaf are as follow:

1 combined with 3, 7 and 7:

1.3, 1.7 and 1.7

2 combined with 6, 8 and 8:

2.6, 2.8, 2.8

3 combined with 5 and 7:

3.5 and 3.7

All the terms:

1.3, 1.7, 1.7, 2.6, 2.8, 2.8, 3.5, 3.7

4 0
3 years ago
What 5/8x + 1/2 (1/4x + 10)? ​
dedylja [7]
5+3x/4




5x+1/2(1/4+10). Distributive property
5x+x/8+5. Combine like terms
5+3x/4
7 0
3 years ago
Read 2 more answers
What is the conditional statement for “all right angles measure 90°
patriot [66]

Answer:

4

Step-by-step explanation:


4 0
3 years ago
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